A rectangular tank with a base feet by feet and a height of feet is full of water (see figure). The water weighs pounds per cubic foot. How much work is done in pumping water out over the top edge in order to empty
a. half of the tank
b. all of the tank
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Pumping Water
An open tank has the shape of a right circular cone (see figure). The tank is 8 feet across the top and 6 feet high. How much work is done in emptying the tank by pumping the water over the top edge?
Pumping Gasoline
In Exercises 27 and 28, find the work done in pumping gasoline that weighs 42 pounds per cubic foot.
The top of a cylindrical gasoline storage tank at a service station is 4 feet below ground level. The axis of the tank is horizontal and its diameter and length are 5 feet and 12 feet, respectively. Find the work done in pumping the entire contents of the full tank to a height of 3 feet above ground level.
